94 lines
3.0 KiB
C++
94 lines
3.0 KiB
C++
// BSD 3-Clause License
|
|
//
|
|
// Copyright (c) 2021, Aaron Giles
|
|
// All rights reserved.
|
|
//
|
|
// Redistribution and use in source and binary forms, with or without
|
|
// modification, are permitted provided that the following conditions are met:
|
|
//
|
|
// 1. Redistributions of source code must retain the above copyright notice, this
|
|
// list of conditions and the following disclaimer.
|
|
//
|
|
// 2. Redistributions in binary form must reproduce the above copyright notice,
|
|
// this list of conditions and the following disclaimer in the documentation
|
|
// and/or other materials provided with the distribution.
|
|
//
|
|
// 3. Neither the name of the copyright holder nor the names of its
|
|
// contributors may be used to endorse or promote products derived from
|
|
// this software without specific prior written permission.
|
|
//
|
|
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
|
|
// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
|
|
// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
|
|
// DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
|
|
// FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
|
// DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
|
|
// SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
|
|
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
|
|
// OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
|
|
// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
#ifndef YMFM_MISC_H
|
|
#define YMFM_MISC_H
|
|
|
|
#pragma once
|
|
|
|
#include "ymfm.h"
|
|
#include "ymfm_adpcm.h"
|
|
#include "ymfm_ssg.h"
|
|
|
|
namespace ymfm
|
|
{
|
|
|
|
//*********************************************************
|
|
// SSG IMPLEMENTATION CLASSES
|
|
//*********************************************************
|
|
|
|
// ======================> ym2149
|
|
|
|
// ym2149 is just an SSG with no FM part, but we expose FM-like parts so that it
|
|
// integrates smoothly with everything else; they just don't do anything
|
|
class ym2149
|
|
{
|
|
public:
|
|
static constexpr uint32_t OUTPUTS = ssg_engine::OUTPUTS;
|
|
static constexpr uint32_t SSG_OUTPUTS = ssg_engine::OUTPUTS;
|
|
using output_data = ymfm_output<OUTPUTS>;
|
|
|
|
// constructor
|
|
ym2149(ymfm_interface &intf);
|
|
|
|
// configuration
|
|
void ssg_override(ssg_override &intf) { m_ssg.override(intf); }
|
|
|
|
// reset
|
|
void reset();
|
|
|
|
// save/restore
|
|
void save_restore(ymfm_saved_state &state);
|
|
|
|
// pass-through helpers
|
|
uint32_t sample_rate(uint32_t input_clock) const { return input_clock / ssg_engine::CLOCK_DIVIDER / 8; }
|
|
|
|
// read access
|
|
uint8_t read_data();
|
|
uint8_t read(uint32_t offset);
|
|
|
|
// write access
|
|
void write_address(uint8_t data);
|
|
void write_data(uint8_t data);
|
|
void write(uint32_t offset, uint8_t data);
|
|
|
|
// generate one sample of sound
|
|
void generate(output_data *output, uint32_t numsamples = 1);
|
|
|
|
protected:
|
|
// internal state
|
|
uint8_t m_address; // address register
|
|
ssg_engine m_ssg; // SSG engine
|
|
};
|
|
|
|
}
|
|
|
|
#endif // YMFM_MISC_H
|